[5] Over 200 million years ago, during the Permian Age, this part of North America was covered by an inland sea.

Over time, water streams tunneled caverns through the formation, which contains an abundant quality of selenite crystals, white and pink gypsum as well as deposits of rare black alabaster.

[3] Several individuals leased land around them during the 1920s and 30s, and allowed limited tours of the caverns, which they called "bat caves."

[7] Alabaster Caverns State Park is underlain by Permian age sedimentary rocks (~300 to 250 million years old).

[c] A small perennial stream now flows through the cavern, fed by various lateral tunnels and seepage from the roof.

In the geologic past, the river was once capable of completely filling the cavern, as the cave walls and gypsum formations show evidence of sculpting by rapidly flowing water.

[7] In October 2018, high rainfall led to a cave in of 2200 tons of rock, which blocked the entrance of the cavern and viewing of the black gypsum vein.

The cavern provides roosting sites that serve as daytime shelter and a place for the non-migrating bats to hibernate during the winter months.

Mexican free-tailed bats migrate to Alabaster Caverns from Mexico in the spring to bear their young.

In March 2017, the Oklahoma Department of Tourism and Recreation published a list of 16 state parks that may be closed to help offset a reduction in its budget for 2018.